Video Glossary: Potlid скачать в хорошем качестве

Video Glossary: Potlid

Potlids are a natural feature that occur in stones when the stones are heated too fast. And if there's moisture in the stone, it will literally pop out a circle of stone. So here we have here, this is a stone that has areas where potlids popped out. And there are places where it's very deep. This is the center of the potlid. This is the center of the potlid. And these are circular areas. You can see that these are cones where these potlids- The- the potlids themselves are weird little things. They're cones, with the deepest part right in the center, that just popped out of the stone when the stone was being heated in a fire. Now that's different from a cultural flake, where the bulb on a cultural flake is on the edge, and where it's taken off of the stone is on the edge. And so, the bulb fits into this negative depression here right on the edge. So, all of these are cultural flake removals, but these potlids are occurring with their deepest points in the center, and the flakes that come off are these cones, sometimes almost perfectly circular, with the deepest point right in the middle. So, that tells us that these came off from a natural fire. Links for further information: Related MVAC webpages: -Flakes: https://www.uwlax.edu/mvac/educators/... -Flintknapping: https://www.uwlax.edu/mvac/educators/... -Heat Treated: https://www.uwlax.edu/mvac/educators/... -Lab Analysis - Lithic Analysis: https://www.uwlax.edu/mvac/process-of... -Lithics: https://www.uwlax.edu/mvac/educators/... -Technologies - Lithics: https://www.uwlax.edu/mvac/past-cultu... Related MVAC videos: -Characteristics of an Artifact: Chipped Stone – MVAC’s Dr. Connie Arzigian describes how archaeologists define and recognize chipped stone artifacts:    • Characteristics of an Artifact: Chipped Stone   -Cultural vs. Natural: Chipped Stone – Dr. Arzigian shows how to distinguish culturally worked chipped stone from naturally altered stone:    • Cultural vs Natural: Chipped Stone   Artifact Identification Mississippi Valley Archaeology Center at the University of Wisconsin–La Crosse works mainly in Wisconsin, Minnesota, and Iowa and can provide information related to that region. If you would like information on artifacts, email a description of the item and where it was found, and attach a picture of the artifact with a scale to show its size. For more information visit MVAC’s website at: https://www.uwlax.edu/mvac/contact/. For information on other regions, we suggest contacting the appropriate state archaeologist from the following list: https://sites.google.com/view/state-a....